Actualización

plugin/migrationmoodle/src/Extractor/BaseExtractor.php

@@ -0,0 +1,63 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\MigrationMoodle\Extractor;
+
+use Chamilo\PluginBundle\MigrationMoodle\Interfaces\ExtractorInterface;
+use Doctrine\DBAL\DBALException;
+use Doctrine\DBAL\FetchMode;
+
+/**
+ * Class Extractor.
+ */
+class BaseExtractor implements ExtractorInterface
+{
+    /**
+     * @var mixed
+     */
+    private $query;
+
+    /**
+     * Extractor constructor.
+     */
+    public function __construct(array $configuration)
+    {
+        $this->query = $configuration['query'];
+    }
+
+    /**
+     * @return bool
+     */
+    public function filter(array $sourceData)
+    {
+        return false;
+    }
+
+    /**
+     * @throws \Exception
+     *
+     * @return \Generator|iterable
+     */
+    public function extract()
+    {
+        $plugin = \MigrationMoodlePlugin::create();
+
+        try {
+            $connection = $plugin->getConnection();
+        } catch (DBALException $e) {
+            throw new \Exception('Unable to start connection.', 0, $e);
+        }
+
+        try {
+            $statement = $connection->executeQuery($this->query);
+        } catch (DBALException $e) {
+            throw new \Exception("Unable to execute query \"{$this->query}\".", 0, $e);
+        }
+
+        while ($sourceRow = $statement->fetch(FetchMode::ASSOCIATIVE)) {
+            yield $sourceRow;
+        }
+
+        $connection->close();
+    }
+}